MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256dac5e81d233c49098ff1bf5a73531ae401851fd48af34ec9083ead8d698a165d
MD5ff5557ed9b4a9d624e84b728c7d300a3
File Typevbe
Size961.5 KB
First Seen2025-11-12
File Namerkc6743.vbe
TagsMassLogger, vbe

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: dac5e81d233c49098ff1bf5a73531ae401851fd48af34ec9083ead8d698a165d
  • MD5: ff5557ed9b4a9d624e84b728c7d300a3

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network immediately
  2. Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
  3. Move crypto wallets to a new address and abandon the old ones
  4. Start a full scan with up-to-date antivirus
  5. Clear saved browser passwords and enable 2FA
  6. Sign out of all sessions on every affected service

YARA Rule Hints

rule MassLogger_SHA256 {
    meta:
        description = "MassLogger sample: dac5e81d233c4909"
        threat_level = "medium"
        first_seen = "2025-11-12"
    condition:
        hash.sha256(0, filesize) == "dac5e81d233c49098ff1bf5a73531ae401851fd48af34ec9083ead8d698a165d"
}

MassLogger — Malware Profile

MassLogger credential stealer. PT2600000043.js Portekiz fatura lurü. CommonJS obfuscation. dispatch configuration data.

Malware Type
Infostealer
Programming Language
C#/.NET
C2 Protocol
SMTP/FTP
Target Systems
Windows

Capabilities & Behavior

Tarayıcı Kimlik Bilgileri
Çerez Hırsızlığı
Kripto Cüzdan Çalma
Sistem Bilgisi
Ekran Görüntüsü
FTP/SSH İstemci Şifreleri
E-posta İstemcisi Çalma
Veri Sızıntısı

IOC List (2 indicators)

IOC — MassLogger
# SHA256 dac5e81d233c49098ff1bf5a73531ae401851fd48af34ec9083ead8d698a165d # MD5 ff5557ed9b4a9d624e84b728c7d300a3
TypeValueNote
sha256 dac5e81d233c49098ff1bf5a73531ae401851fd48af34ec9083ead8d698a165d Sample:MassLogger
md5 ff5557ed9b4a9d624e84b728c7d300a3 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi